The ITCem04 is a battery powered, continuous monitoring device with four input
channels connected to one embedded temperature sensor and three general-purpose
external analogue inputs. It also has serial interfaces, real-time clock / calendar,
data-log memory, alarm functions, and histogram.
The real-time clock and calendar allow user to program the rate at which
the unit wakes-up and reads the selected input channels. Current versions allow
programmable wake-up intervals from 1 to 255 minutes leading to a total monitoring
time of almost one year. Immediate command, programmable time delay, or a button
could also trigger data logging.
Alarms could be programmed as the high and low threshold of temperature and each
input channel. Moreover, the unit records time stamp and duration when temperature
and the first input channel leave the programmed interval. External devices may become
aware of the alarm condition through an interrupt pin.
Units are identifiable by unique read-only 64 bit serial numbers and another 32 bytes
non-volatile user RAM.
|
